r0 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./cgroup/cgroup.procs\x00', 0x0, 0x0)
open_by_handle_at(r0, &(0x7f0000000080)=@isofs_parent={0x14, 0x2, {0x4, 0x0, 0xff1c}}, 0x0)